Whether a truck comes to a stop by crashing into a haystack or a brick wall, the impulse is

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Quizplus · Accepted Answer

Impulse is defined as the change in momentum of an object, which depends on the force applied and the time over which the force is applied. Whether a truck stops by hitting a haystack or a brick wall, the change in momentum (from its initial momentum to zero) is the same. The difference lies in the time over which the force is applied (longer with a haystack, shorter with a brick wall), not the total impulse.

Whether a Truck Comes to a Stop by Crashing into a Haystack